package org.example.spring_book.model;

import lombok.Data;

/**
 * @ClassName Result
 * @Description TODO
 * @Author wangxiaodong
 */
@Data
public class Result<T> {
    private Integer code;//后端响应状态，业务状态码 200/成功，-1失败，-2表示未登录
    private String errmsg;//后端发生错误的原因
    private T data;
    //成功时:
    public static <T> Result<T> success(T data){
        Result<T> result=new Result<T>();
        result.setData(data);
        result.setCode(200);
        return result;
    }
    //失败时
    public static <T> Result<T> fail(T data,String errmsg){
        Result<T> result=new Result<T>();
        result.setData(data);
        result.setCode(-1);
        result.setErrmsg(errmsg);
        return result;
    }
    public static <T> Result<T> fail(String errmsg){
        Result<T> result=new Result<T>();
        result.setCode(-1);
        result.setErrmsg(errmsg);
        return result;
    }
    //未登录时
    public static <T> Result<T> unlogin(){
        Result<T> result=new Result<T>();
        result.setCode(-2);
        result.setErrmsg("用户未登录");
        return result;
    }
}
